Wago 4 level same potential terminal block din 35x75mm lock numeric 727 series wago 727 227021 000 wago 727 227021 000 4 level same potential terminal block with locking clips for din rail 35x75mm marked 0 1 2 3 3 2 1 0 complies with en60715 all clamping points are short circuited colour light grey 50pcs wago 727 227021 000 4 level same potential block 0 3 3 0 lock light grey 50pk